demo: https://github.com/Bo0628/iOS26UITabBarColorDemo
In my venture, the window.rootViewController is a UITabBarController containing 4 UIViewControllers. The primary, third, and fourth VCs are empty, whereas the second VC’s view hierarchy is structured as follows:
UITabBarController
├── UIViewController
├── UIViewController
├── UIScrollView (contentSize: self.view.width * 2, 0; backgroundColor: .crimson)
├── UIScrollView (contentSize: 0, self.view.top * 2; backgroundColor: .black)
└── UIScrollView (contentSize: 0, self.view.top * 2; backgroundColor: .white)
├── UIViewController
├── UIViewController
After I swap to the second tab and horizontally scroll the scrollView, the tabBar coloration would not adapt to the present view’s dominant coloration. Nevertheless, if I launch the app and sequentially faucet each tab earlier than switching to the second tab, the tabBar coloration then adjustments dynamically throughout horizontal scrolling. But when I background the app and return, the tabBar reverts to black.
Why does this occur? How can I both: Manually management the tabBar coloration, or Make it mechanically match the web page’s dominant coloration?
This challenge happens when the "Cut back Transparency" accessibility setting is enabled & UITabBar.isTranslucent = true.
